Could someone explain to me the need for the x2godesktopsharing group?

I don't see any reference to it here: 
http://www.x2go.org/doku.php/wiki:components:desktop-sharing

The package doesn't do any checking in case the group does not exist:

rogram terminated with signal 11, Segmentation fault.
#0  0x000000000040adca in ShareTray::slotStartSharing (this=0xf78070) at 
sharetray.cpp:326
326                     chown ( socketFname.toAscii(),getuid(),getgrnam ( 
"x2godesktopsharing" )->gr_gid );

This results in a segfault if the group is not present.

Also, is this the tool to use for a user to connect to their own desktop 
session when they are away?

Thanks!

-- 
Orion Poplawski
Technical Manager                     303-415-9701 x222
NWRA, Boulder Office                  FAX: 303-415-9702
3380 Mitchell Lane                       [email protected]
Boulder, CO 80301                   http://www.nwra.com